During my translation of 1.40 I came across this bug:
In "Administration/Modules/OrderDetails.ascx.cs", line 437 you have this:
<asp:BoundField DataField="<% $NopResources:Admin.OrderDetails.Products.Quantity %>"
HeaderText="Quantity" HeaderStyle-HorizontalAlign="Center" ItemStyle-Width="10%"
ItemStyle-HorizontalAlign="Center"></asp:BoundField>
Clearly, this DataField should not use the localized text, but rather just:
DataField="Quantity"
Contrary, the HeaderText attribute should probably use the localized text resource :-)